An early origin for detailed perception in Autism Spectrum Disorder: biased sensitivity for high-spatial frequency information
Autistics demonstrate superior performances on several visuo-spatial tasks where local or detailed information processing is advantageous. Altered spatial filtering properties at an early level of visuo-spatial analysis may be a plausible perceptual origin for such detailed perception in Autism Spec...
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| Veröffentlicht in: | Scientific reports 2014-07, Vol.4 (1), p.5475-5475, Article 5475 |
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| description | Autistics demonstrate superior performances on several visuo-spatial tasks where local or detailed information processing is advantageous. Altered spatial filtering properties at an early level of visuo-spatial analysis may be a plausible perceptual origin for such detailed perception in Autism Spectrum Disorder. In this study, contrast sensitivity for both luminance and texture-defined vertically-oriented sine-wave gratings were measured across a range of spatial frequencies (0.5, 1, 2, 4 & 8 cpd) for autistics and non-autistic participants. Contrast sensitivity functions and peak frequency ratios were plotted and compared across groups. Results demonstrated that autistic participants were more sensitivity to luminance-defined, high spatial frequency gratings (8 cpd). A group difference in peak distribution was also observed as 35% of autistic participants manifested peak sensitivity for luminance-defined gratings of 4 cpd, compared to only 7% for the comparison group. These findings support that locally-biased perception in Autism Spectrum Disorder originates, at least in part, from differences in response properties of early spatial mechanisms favouring detailed spatial information processing. |
| doi_str_mv | 10.1038/srep05475 |
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Altered spatial filtering properties at an early level of visuo-spatial analysis may be a plausible perceptual origin for such detailed perception in Autism Spectrum Disorder. In this study, contrast sensitivity for both luminance and texture-defined vertically-oriented sine-wave gratings were measured across a range of spatial frequencies (0.5, 1, 2, 4 & 8 cpd) for autistics and non-autistic participants. Contrast sensitivity functions and peak frequency ratios were plotted and compared across groups. Results demonstrated that autistic participants were more sensitivity to luminance-defined, high spatial frequency gratings (8 cpd). A group difference in peak distribution was also observed as 35% of autistic participants manifested peak sensitivity for luminance-defined gratings of 4 cpd, compared to only 7% for the comparison group. These findings support that locally-biased perception in Autism Spectrum Disorder originates, at least in part, from differences in response properties of early spatial mechanisms favouring detailed spatial information processing.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/srep05475</identifier><identifier>PMID: 24993026</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>631/378/1689/2608 ; 631/477 ; 631/80/304 ; 692/699/476/1373 ; Adolescent ; Adult ; Autism ; Case-Control Studies ; Child Development Disorders, Pervasive - psychology ; Frequency dependence ; Humanities and Social Sciences ; Humans ; Information processing ; multidisciplinary ; Perception ; Photic Stimulation ; Science ; Spatial analysis ; Visual Perception ; Young Adult</subject><ispartof>Scientific reports, 2014-07, Vol.4 (1), p.5475-5475, Article 5475</ispartof><rights>The Author(s) 2014</rights><rights>Copyright Nature Publishing Group Jul 2014</rights><rights>Copyright © 2014, Macmillan Publishers Limited. All rights reserved 2014 Macmillan Publishers Limited. 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Altered spatial filtering properties at an early level of visuo-spatial analysis may be a plausible perceptual origin for such detailed perception in Autism Spectrum Disorder. In this study, contrast sensitivity for both luminance and texture-defined vertically-oriented sine-wave gratings were measured across a range of spatial frequencies (0.5, 1, 2, 4 & 8 cpd) for autistics and non-autistic participants. Contrast sensitivity functions and peak frequency ratios were plotted and compared across groups. Results demonstrated that autistic participants were more sensitivity to luminance-defined, high spatial frequency gratings (8 cpd). A group difference in peak distribution was also observed as 35% of autistic participants manifested peak sensitivity for luminance-defined gratings of 4 cpd, compared to only 7% for the comparison group. These findings support that locally-biased perception in Autism Spectrum Disorder originates, at least in part, from differences in response properties of early spatial mechanisms favouring detailed spatial information processing.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>24993026</pmid><doi>10.1038/srep05475</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 631/378/1689/2608 631/477 631/80/304 692/699/476/1373 Adolescent Adult Autism Case-Control Studies Child Development Disorders, Pervasive - psychology Frequency dependence Humanities and Social Sciences Humans Information processing multidisciplinary Perception Photic Stimulation Science Spatial analysis Visual Perception Young Adult |
| title | An early origin for detailed perception in Autism Spectrum Disorder: biased sensitivity for high-spatial frequency information |
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